Fountain pen



-J. L. HOYLE FOUNTAIN PEN June 23, 1936.

Filed May 31, 1954 3mm Ha Z6 rotation in the hand.

Patented June 23, 1936 UNITED STATES PATENT OFFICE FoUN'rAm PEN JosephL. Hoyle, Hartford, Conn.

Application May 31, 1934, Serial No. 728,445

1 Claim.

This invention relates to improvements ini writing devices and pertainsparticularly to an improved writing pen of the type commonly I known asa fountain pen.

The primary object of the present invention is to provide a fountain penof a double type whereby inks of two different colors may be carried inthe barrel and either color made use of without having to'make anyadjustment of any parts'of the pen, the conversion being obtained simplyby turning the pen barrel through a half Another object of the inventionis to provide a double fountain pen designed to contain two differentlycolored inks or to carry two separate reservoirs of ink of the samecolor, each of which ink supplies or reservoirs has a pen connectedtherewith, in which either pen may be submerged in a quantity of ink forfilling the reservoir connected therewith with'out introducing the otherpen into the ink.

' The invention broadly contemplates the provision of a fountain penhaving a longitudinally divided barrel; each of the ,two divisionsconstituting an ink reservoirvleading to a pen nib. At the end of thebarrel opposite the nibs, the barrel sections are swivelly joinedtogether so that they may be swung in planes paralleling the plane ofthe opposing faces'so that either pen may be dipped into an inkreservoir, for filling. Readily removable means at the end of the barrelopposite the swivel connections between the sections maintains thebarrel sections normally modifications mark no material departure from Ithe salient features of the invention as expressed in the appendedclaim."

In the drawing:-

Figure 1 is a detail side elevation partly broken away and in section ofa device constructed according to the embodiment of this invention.

Figure 2 is a fragmentary longitudinal section' partly in detail of thedevice.

Figure 3 ma fragmentary side elevation show- .ing the manner in whichthe pen sections are swingably secured together.

Figure 4 is a sectional view taken on the line 4-4 of Figure 1.

v Referringto the drawing wherein like numerals of reference designatecorresponding parts throughout the several views, the numeral ldesignates the barrel of the pen embodying the present invention. Thisbarrel, as illustrated, is divided longitudinally throughout to form thetwo semi-cylindrical sections 2, each of the opposing sides of which isclosed by a fiat wall 3, thus forming two ink or' ink sac chambers, eachof which is-indicated by the numeral 4. In the present case, each of thechambers 4 is illustrated as having an ink saci therein, although itwill be obvious to those skilled in the art that the ink may be placeddirectly in the chamber as in the old fashioned type of fountain pen.Each of these sacs may be compressed in the usual manner by means of akey device 6 when it is desired to exhaust the sac of air for refillingwith ink. This construction is well known in fountain pen art and as itforms no part of the present invention, need not be further described.

The upper end of each of the barrel sections 2 is rounded and thickened.as indicated at I, and the confronting faces of these thickened portionsare connected by a pivot pin 8, thus swivelly joining the sections atthis end so that they may have their opposite ends separated in themanner illustrated in Figure 3. In the opposite end of each section 2from the pivot 8 is fitted a semi-circular plug 9. Each of these plugsis of slightly greater diameter through a portion of its lengthextending from one end, than the remaining portion so as to form ashoulder I 0 which rests upon the end edge of the adjacent fiat wall 3of the barrel section, thus causing the fiat sides of the exposedportions of the plugs to faces of the adjacent walls 3. Thus, when thesections 2 are brought together to form the complete ba rel, the flatfaces of the plugs 9 will be in abutting relation, as illustrated inFigures 1 and 2. The inner end of each plug has an ink 45 sac 5 attachedthereto, to feed ink through a suitable passage in the plug to a pen nibII which is mounted in the outer end of the plug in the usual manner.

The barrel sections 2 are retained in operative relation by theapplication of a securing ring I! which surrounds'the barrel adjacentthe pen end in the manner illustrated. This ring is preferablyinteriorly threaded for engagement with screw threads l3 formed aboutthe barrel. While 5 this construction is preferred, it will be obviousthat it is not required that the ring be threaded upon the barrel as africtional engagement of the same around the barrel may suflice.

The cap for the pen is indicated by the numeral I4 and this is alsointeriorly threaded for engagement with the threads I 3 when the pen isout of use or for engagement with the threads l5 formed about the barreladjacent the opposite or upper end where the cap is placed while the penis being used.

From the foregoing, it will be readily apparent that the pen may beemployed to carry inks of two different colors and when so employed,either color may be readily brought into use by merely rotating the penone-half a turn between the fingers. It is also contemplated to use thepen, if desired, for one color ink, in which case there will also be anadditional supply when one barrel section runs-dry and the running dryof this section will be an indicator of the quantity of ink remaining inthe pen so that if the section is immediately or shortly thereafterrefilled, the user will never be completely out of ink.

In addition to the foregoing advantages, it will be apparent thatanother advantage in the present invention resides in the fact that bymaking a single barrel in two semi-cylindrical reservoirs and placingthe pens back to back in the ends of the reservoirs and pivotallyconnecting the reservoirs at the other ends, either pen may be usedwithout interference by the other and either barrel may be readilyrefilled without getting the pen of the other barrel into the ink. Afterbeing refilled, the barrel sections are brought together and secured bythe ring l2. By this means, the usual pen shape is maintained and nodifliculty is experienced in holding the pen in the fingers.

What is claimed is:

A fountain pen, comprising a pair of elongated receptacles each ofsemi-cylindrical cross section, said receptacles being normally disposedwith their flat faces together to form a complete cylindrical body, thereceptacles at one end of the body being closed, a pin member connectingthe opposed faces of the receptacles at the closed ends thereof, a pencarrying plug body removably disposed in the other end of eachreceptacle, the pens of said plug bodies being normally disposed in backto back relation, screw threads extending circumferentially of eachreceptacle adjacent each end, the threads of the two receptacles beingnormally matched to extend entirely around the body, an interiorlythreaded annulus adapted to encircle the 'body at the ends adjacent thepens, and an interiorly threaded cap designed to receive either end ofthe body and to be connected therewith through engagement with thethreads thereon said annulus forming a stop for the cap when the latteris in position to cover the pens.

JOSEPH L. HOYLE.

